package com.rr.program._long;

/**
 * @author : RENBIAO
 * @createTime : 2021/12/23 17:17
 */
public class LongIsNull {
    public static void main(String[] args) {
        Long a = null;
        Long userId = 123L ;


//        if (null == userId || userId.longValue() == 0) {
//            System.out.println("kong ");
//        }else{
//            System.out.println("no kong");
//        }

        if (null == userId || userId.longValue() == 0) {
            System.out.println("null");
        } else {
            System.out.println("no null");
        }


    }
}
